FRAGGLES

Boober
Gobo
Mokey
Red
Wembley
Uncle Traveling Matt

DOOZERS

Architect {leader of the Doozer community}
Cotterpin {daughter of Flange and Wingnut; best friend of Wrench}
Flange {husband of Wingnut; father of Cotterpin}
Modem {mother of Wrench}
Wingnut {wife of Flange; mother of Cotterpin}
Wrench {son of Modem; best friend of Cotterpin}

GORGS

Junior
Ma
Pa

RECURRING/REGULAR

Doc
Sprocket {Doc's dog}
Ned Shimmelfinney (quite often mentioned, but never appeared onscreen)
Marjory the Trash Heap
Philo and Gunge

OTHER

There are dozens upon dozens of Fraggles in Fraggle Rock; these are a few of the more popular ones.
Brio {part of The Minstels; plays the cymbals}
Cantus the Minstrel {leader of The Minstrels, a traveling band}
Convincing John {a preacher-like fraggle who can convince anyone of anything}
Feenie {best friend of Large Marvin; good-natured, but slow-witted}
Fragglettes {Convincing John's backup singers}
Henchy {assisstant to the World's Oldest Fraggle}
Large Marvin {best friend of Feenie; fattest Fraggle due to his love of snacking; dim-witted and athletic}
Marlon {minor recurring character}
Sidebottom {Boober's alter ego}
Storyteller {crushes on Traveling Matt}
Tosh {good friends with Boober}
World's Oldest Fraggle {just what it says}